htk.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:20:d7:62:c9:40:16:8f:aa:62:bb:21:07:ea:0a:85:62:aa was issued on by Let's Encrypt.

This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=htk.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:20:d7:62:c9:40:16:8f:aa:62:bb:21:07:ea:0a:85:62:aa
Serial Number (int): 272512190482778579182612114829407682912938
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 90:5c:61:33:7e:69:8c:29:b2:3d:1b:c2:11:97:ef:3a:a5:2e:32:a9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 05:8f:71:6b:69:a5:37:ed:34:ae:a1:e9:a7:e0:1c:65:f5:5a:be:b4
Fingerprint (sha256): 51:c5:ca:cf:d4:12:48:35:ee:cc:2c:10:2e:06:36:c4:c6:33:6b:ac:dd:be:3c:26:b9:ef:e1:1e:a0:8b:5e:b9

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate htk.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for htk.org

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

htk.org

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htk.org
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Certificate

The complete raw certificate details for htk.org in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 272512190482778579182612114829407682912938
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-08 04:11:47 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-06 04:11:47 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'htk.org'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 694486455341618990543069611801662519664379390512245771006890149269067265980438736415750240180586201105156809851578926390885027307018648575489088240323329168018807367783123868347627561295195017008880808453507915024350977630355080897545151559381841965437965108866253432515445083706711559180117355623860980552665418280145533861768389019946107517464606604893566593709793565471846309614661929816788089624019008129555703804202973502652214432951736713849861046096367507673287334351736009291483521217363608615593438800779328810111507820704342323725891930235010911783311190923923829074564633387440117036663400106090049941054059946018015864049517936323706297818262744309359374928960434482094098715938938547129672994634077627214253064607278603346189428417991862542652970147886128491722154718612583063268483291009894043567896100350942862311609683981980317662524178476321543794325255311310967772560567694837465326686535558871372326396385360401032896867364311473142925421248586076254615519502645344347660313327372729991835773206367689533372103612844831739082125430346975755688933133579069710640383073526773699547839775441783523991403270536406699813573911155703479890647468562090284615865244703114901335434966070765376298704188300235264330580592849
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							905c61337e698c29b23d1bc21197ef3aa52e32a9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (11 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'htk.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c6fa3e4b50000040300473045022100f21a0cf9d13637aa17992687b26b8174da6dd7e750314ffc7048356873f3958e02203bde2d23a34b48d0c18ecb91d62faefa3cb138e2ffaff8ca1948659094b3831e00750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c6fa3e4c6000004030046304402204215eb6330f7550467b4dd11bfef587117dde2c43d35d9dd6269494ea7a7254f02200cf6490b0f01e06f4ac2d547ac8ce056741ffbeab92c7eeaafce751656b7ede8
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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